package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class LoginDemo {
    public static void main(String[] args) {
       UserInfo userInfo=InputUtil.getInputObject(new UserInfo(),"欢迎登录","登录");
        try (
                Connection connection=DBUtil.getConnection();
                ){
           Statement statement=connection.createStatement();
           String sql="SELECT username,password\n" +
                   "FROM userinfo " +
                   "WHERE username='"+userInfo.getUsername()+"' AND password='"+userInfo.getPassword()+"'";
           ResultSet rs=statement. executeQuery(sql);
            System.out.println(sql);
          if (rs.next()){
              System.out.println("登录成功，欢迎你:");
          }else{
              System.out.println("登录失败，用户名或密码不正确");
          }
        } catch (SQLException e) {
            e.printStackTrace();
        }

    }
}
